Federal-Mogul Powertrain, the subsidiary of Federal-Mogul Holdings, has become the first company in the world to mass produce ultra-high-strength iron cylinder liners. The latest formulation of the cylinder liner, called GOE330, is made of special form of compacted graphite iron (CGI) that reduces standard cylinder bore deformation by up to 27% when subjected to maximum piston side thrust, superior to other existing irons. material. This material can be used to make cylinder liners with cylinder bores between 100 mm and 190 mm.

“The deformation of the cylinder bore caused by the load makes it more difficult to seal between the cylinder liner and the piston ring set, increasing fuel consumption and wear,” explains Gian Maria Olivetti, CTO of Federal-Mogul Powertrain. “And if you increase the tension of the piston ring, it will cause more friction and higher fuel consumption.”

“We have developed new liner materials with higher strength and stiffness, enabling our OEM customers to develop more efficient engines with higher peak cylinder pressures,” continues Olivetti. “At the same time, our research and development results enable OEM customers to use thinner cylinder liners for a more compact engine design.”

The Young's modulus of GOE330 is more than 15% higher than the existing high-strength iron cylinder liner material. When the pressure is 270 MPa, the fatigue strength is about one-third higher than the existing material. The Federal-Mogul Powertrain program will increase the strength and rigidity of materials to new levels through future research and development.

Non-road industries – such as construction, agriculture and industrial applications – are the first to recognize the advantages of ultra-high-strength cylinder liners. On the basis of this, the Federal-Mogul Powertrain further foresees that manufacturers in the field of shipbuilding, power generation and road heavy-duty engines will pay more attention to this technology.

The Huimen Powertrain not only has extensive experience in the development of cylinder liner materials, but also has extensive experience in optimizing the new cylinder liner geometry and performing the required comprehensive simulation and analysis under different thermal and mechanical loads. The Federal-Mogul Powertrain conducts test bench testing prior to engine application testing, and reproduces the fatigue load generated by the piston-side thrust through the company's internally designed Hydropulser test rig to support integrated simulation and analysis.

To ensure that all produced cylinder liners meet the high performance standards of the initial samples, Federal-Mogul Powertrain uses advanced and high-quality production equipment to optimize tolerances and honing control. Measurement is also an extremely important part of the manufacturing process after confirming the geometry and surface morphology of the product.

“Because various application areas and markets are affected by different factors, we strive to provide targeted solutions to meet the needs of various application areas and markets.” Volker Scherer, Director of Product Management, Huimen Powertrain Cylinder Products The doctor said. “For some of our customers, the key factors affecting cylinder liner purchases are price and local supply; for most other customers, they must use mechanically superior performance in pursuit of more challenging design goals and load requirements. Products such as products that use GOE330 materials."

“No matter what customer's requirements, our goal is to be able to provide our customers with a complete and optimized power cylinder system, including complete components including cylinder liners, pistons and piston ring sets.”

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